Mathematics: Function notation A circle has a radius of 26 cm. A second circle has an area that is 56 square cm more than the first circle. Represent the area of the second circle.

Function notation A circle has a radius of 26 cm.

Ответ:

aime005

19.01.2022

Mathematics

Area of second circle = 56cm² + $\pi r^{2}$

Area of second circle = 2179.71cm²

Step-by-step explanation:

let the radius of the small circle be r and that of the big circle be R

Area small circle = $\pi r^{2}$

Area Big circle = $\pi R^{2}$

Area Big circle - Area small circle = 56cm²

$\pi R^{2}$ - $\pi r^{2}$ =56cm²

The second circle is the bigger circle.

Area of second circle - $\pi r^{2}$ =56cm²

Area of second circle = 56cm² + $\pi r^{2}$

r =26cm

Area of second circle = 56cm² + $\pi r^{2}$

Area of second circle = 56cm² + $\pi* 26^{2}$

Area of second circle = 56cm² + 2123.71

Area of second circle = 2179.71cm²

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Ответ:

romet31

19.03.2022

Mathematics

Given - area of a racquet ball court is 800 square feet.

length is the twice of the width

find out thedimensions of the racquet ball court.

To proof -

Formula

area of a rectangle = length×breadth

as given inthe question the length of court is twice of its width .

let assume width be w

than length become 2w

put in the formula

w×2w = 800 ft²

2w² = 800 ft²

w = $\sqrt{400}$ ft

w = 20 ft

Than the length become 40 ft.

Hence proved

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Function notation A circle has a radius of 26 cm. A second circle has an area that is 56 square cm more than the first circle. Represent the area of the second circle.

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